Display substrate and display device

Abstract

The application provides a display substrate and a display device, relates to the technical field of display, and can realize a peep-proof function.The display substrate comprises a substrate, a pixel defining layer and a plurality of sub-pixels arranged on the substrate; the pixel defining layer defines a plurality of pixel opening regions; the sub-pixel comprises an anode pattern and a light-emitting material layer, the anode pattern is arranged between the substrate and the light-emitting material layer, at least part of the pixel defining layer is arranged between the anode pattern and the light-emitting material layer, at least part of the anode pattern is arranged in the pixel opening region, and at least part of the light-emitting material layer is arranged in the pixel opening region; the display substrate has a light emission quantity greater at a target visual angle than at a non-target visual angle.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display substrate and a display device. Background Technology

[0002] With the development of display technology, mobile phones, computers, and other display products are being used more and more widely. Display products generally have a wide viewing angle, allowing users at different angles to see the displayed information. However, in some scenarios, users may wish to prevent other users from seeing the information displayed on the product. Therefore, how to implement privacy protection for display products has become a pressing issue. Summary of the Invention

[0003] The purpose of this invention is to provide a display substrate and a display device that can achieve privacy protection.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A first aspect of the present invention provides a display substrate comprising: a substrate, and a pixel defining layer and a plurality of sub-pixels disposed on the substrate;

[0006] The pixel defining layer defines multiple pixel opening regions;

[0007] The sub-pixel includes an anode pattern and a light-emitting material layer. The anode pattern is located between the substrate and the light-emitting material layer. At least a portion of the pixel defining layer is located between the anode pattern and the light-emitting material layer. At least a portion of the anode pattern is located in the pixel opening region, and at least a portion of the light-emitting material layer is located in the pixel opening region.

[0008] The light emission of the display substrate at the target viewing angle is greater than the light emission of the display substrate at the non-target viewing angle.

[0009] Optionally, the display substrate further includes:

[0010] A planarization layer is located between the substrate and the anode pattern. The planarization layer includes a flat portion and a protruding portion. The protruding portion is located in the pixel opening region, and the slope angle of the protruding portion is greater than 0°. In the pixel opening region, the anode pattern and the light-emitting material layer continue the morphology of the planarization layer.

[0011] Optionally, the area S1 occupied by the protruding portion in the pixel opening area satisfies: S / 6≤S1≤S / 2, where S represents the area of ​​the pixel opening area; and / or, the slope angle α of the protruding portion satisfies: 30°≤a≤60°.

[0012] Optionally, the flat portion includes a first sub-portion and a second sub-portion, the first sub-portion being located in a non-pixel opening region, and the second sub-portion being located in the pixel opening region. Within the same pixel opening region, the second sub-portion and the protruding portion are arranged along a first direction.

[0013] Optionally, the flat portion includes a first sub-portion and two third sub-portions, the first sub-portion being located in a non-pixel opening region, the third sub-portions being located in the pixel opening region, and the protruding portion being located between the two third sub-portions within the same pixel opening region.

[0014] Optionally, the flat portion includes a first sub-portion and a fourth sub-portion, the first sub-portion being located in a non-pixel opening region, and the fourth sub-portion being located in the pixel opening region, wherein the fourth sub-portion surrounds the protruding portion within the same pixel opening region.

[0015] Optionally, the pixel defining layer includes a plurality of barrier patterns that surround the plurality of pixel opening regions. Among the barrier patterns surrounding the same pixel opening region, at least two barrier patterns have different thicknesses in the direction perpendicular to the substrate.

[0016] Optionally, the pixel defining layer includes a plurality of barrier patterns, the plurality of barrier patterns surrounding the plurality of pixel opening areas;

[0017] The display substrate further includes a spacer layer, which is located between the pixel defining layer and the light-emitting material layer. The spacer layer includes a plurality of spacers, and in each barrier pattern that forms the same pixel opening area, at least one barrier pattern has the spacer disposed on the side of the barrier pattern facing away from the substrate.

[0018] Optionally, the display substrate further includes:

[0019] A light-shielding layer is located on the side of the light-emitting material layer facing away from the substrate. The light-shielding layer includes a plurality of light-shielding patterns, at least a portion of which is located in the pixel opening region.

[0020] Based on the above-described display substrate technical solution, a second aspect of the present invention provides a display device including the above-described display substrate.

[0021] In the technical solution provided by this invention, by setting the light emission of the display substrate at the target viewing angle to be greater than the light emission of the display substrate at the non-target viewing angle, when the display substrate is applied to a display device, the user can obtain a better display effect when viewing the display screen from the target viewing angle, while the display effect is significantly reduced when the user views the display screen from the non-target viewing angle. This not only achieves the privacy protection function of the display device and effectively protects the user's privacy, but also reduces the impact of light on others. Therefore, the display substrate provided by this invention, when applied to a display device, has a privacy protection function and effectively meets the personalized needs of users. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0023] Figure 1 This is a schematic diagram of the sub-pixel layout of a display substrate provided in an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of a first cross-section of a display substrate provided in an embodiment of the present invention;

[0025] Figure 3 This is a first cross-sectional schematic diagram of the planarization layer in a display substrate provided in an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of a second cross-section of a display substrate provided in an embodiment of the present invention;

[0027] Figure 5 This is a second cross-sectional schematic diagram of the planarization layer in a display substrate provided in an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of a third cross-section of a display substrate provided in an embodiment of the present invention;

[0029] Figure 7 This is a fourth cross-sectional schematic diagram of a display substrate provided in an embodiment of the present invention;

[0030] Figure 8 This is a fifth cross-sectional schematic diagram of a display substrate provided in an embodiment of the present invention. Detailed Implementation

[0031] To further illustrate the display substrate and display device provided in the embodiments of the present invention, a detailed description is provided below with reference to the accompanying drawings.

[0032] Please see Figures 1 to 8This invention provides a display substrate, including: a substrate 10, and a pixel delimiting layer (PDL) (including a barrier pattern PDL-D) and a plurality of sub-pixels disposed on the substrate 10;

[0033] The pixel delimiting layer (PDL) defines a plurality of pixel opening regions 20;

[0034] The sub-pixel includes an anode pattern 30 and a light-emitting material layer 40. The anode pattern 30 is located between the substrate 10 and the light-emitting material layer 40. At least a portion of the pixel defining layer PDL is located between the anode pattern 30 and the light-emitting material layer 40. At least a portion of the anode pattern 30 is located in the pixel opening region 20, and at least a portion of the light-emitting material layer 40 is located in the pixel opening region 20.

[0035] The light emission of the display substrate at the target viewing angle is greater than the light emission of the display substrate at the non-target viewing angle.

[0036] It should be noted that, Figure 2 , Figure 4 , Figure 6 , Figure 7 and Figure 8 In the middle, the cross line indicates that the user is at a non-target viewing angle and cannot see the display screen of the display substrate.

[0037] For example, the display substrate includes a plurality of sub-pixels, each sub-pixel including a sub-pixel driving circuit and a light-emitting element. The light-emitting element includes an anode pattern 30 and a light-emitting material layer 40. The sub-pixel driving circuit is coupled to the anode of the light-emitting element and is used to provide a driving signal to the light-emitting element to drive it to emit light. The sub-pixel driving circuit is located between the planarization layer PLN and the substrate 10, and is not shown in the figures.

[0038] For example, the plurality of sub-pixel driving circuits included in the plurality of sub-pixel pixels are arranged in an array. The plurality of sub-pixel driving circuits are divided into multiple rows of sub-pixel driving circuits and multiple columns of sub-pixel driving circuits. The multiple rows of sub-pixel driving circuits are arranged along a second direction, and each row of sub-pixel driving circuits includes a plurality of sub-pixel driving circuits arranged along a first direction. The multiple columns of sub-pixel driving circuits are arranged along the first direction, and each column of sub-pixel driving circuits includes a plurality of sub-pixel driving circuits arranged along a second direction. For example, the first direction intersects with the second direction. For example, the first direction includes a horizontal direction, and the second direction includes a vertical direction.

[0039] For example, the plurality of sub-pixels included in the display substrate adopt a Real RGB pixel arrangement.

[0040] For example, the display substrate further includes a pixel delimiting layer (PDL). The fabrication process of the display substrate is as follows: first, the sub-pixel driving circuit is formed; then, an anode pattern 30 is formed on the side of the sub-pixel driving circuit facing away from the substrate 10; then, the pixel delimiting layer (PDL) is formed; next, the light-emitting material layer 40 is formed; then, a cathode layer 70 is formed; and finally, an encapsulation layer 60 is formed. For example, the pixel delimiting layer (PDL) can completely cover the boundary of the anode pattern 30.

[0041] For example, the central portion of the anode pattern 30 is located in the pixel opening region 20, and the edge portions of the anode pattern 30 are covered by the pixel defining layer PDL. For example, at least a portion of the luminescent material layer 40 is located in the pixel opening region 20.

[0042] For example, when a user uses a display device including the display substrate, the target viewing angle is the viewing angle from which the user views the display on the display device, and the non-target viewing angle is any other viewing angle besides the user's viewing angle.

[0043] For example, the target viewing angle includes a straight viewing angle, or a viewing angle deviated from one side of the display device by a certain angle, and the non-target viewing angle refers to other viewing angles besides the target viewing angle.

[0044] As can be seen from the specific structure of the display substrate described above, in the display substrate provided in this embodiment of the invention, by setting the light emission amount of the display substrate at the target viewing angle to be greater than the light emission amount of the display substrate at the non-target viewing angle, when the display substrate is applied to a display device, the user can obtain a better display effect when viewing the display screen of the display device at the target viewing angle, while the display effect is significantly reduced when the user views the display screen of the display device at the non-target viewing angle. This not only realizes the privacy protection function of the display device and protects the user's privacy, but also reduces the impact of light on others.

[0045] Therefore, the display substrate provided in this embodiment of the invention has a privacy protection function when applied to a display device, which well meets the personalized needs of users.

[0046] like Figures 2 to 5 As shown, in some embodiments, the display substrate further includes:

[0047] A planarization layer PLN is located between the substrate 10 and the anode pattern 30. The planarization layer PLN includes a flat portion PLN-P and a protruding portion PLN-T. The protruding portion PLN-T is located in the pixel opening region 20, and the slope angle of the protruding portion PLN-T is greater than 0°. In the pixel opening region 20, the anode pattern 30 and the light-emitting material layer 40 continue the morphology of the planarization layer PLN.

[0048] It should be noted that, Figure 1 In this context, A represents the flat region PLN-P, and B represents the protruding region PLN-T. Figure 2 The structures correspond.

[0049] For example, the sub-pixel driving circuit is located between the anode pattern 30 and the substrate 10, and the planarization layer PLN is located between the sub-pixel driving circuit and the anode pattern 30. The planarization layer PLN can fill the step difference formed by the sub-pixel driving circuit.

[0050] like Figure 3 and Figure 5 As shown, for example, the planarization layer PLN includes a planar portion PLN-P and a protruding portion PLN-T of an integral structure. The protruding portion PLN-T is located in the pixel opening region 20. The planar portion PLN-P may be at least partially located in the pixel opening region 20, or the planar portion PLN-P may not be located in the pixel opening region 20 at all.

[0051] For example, the surface of the protruding portion PLN-T facing away from the substrate 10 includes a slope with a slope angle greater than 0°.

[0052] For example, in the pixel opening region 20, the anode pattern 30 and the light-emitting material layer 40 continue the morphology of the flat layer PLN, such that the anode pattern 30 and the light-emitting material layer 40 also have a slope angle greater than 0°.

[0053] For example, the planarization layer PLN can be made of organic materials, and the manufacturing process is as follows: an organic material film layer is formed using organic materials, the organic material film layer is exposed using a Halftone Mask, and a development process is performed after exposure to form a planarization layer PLN including the protruding portion PLN-T and the planar portion PLN-P. It is worth noting that by adjusting the exposure of the organic material film layer, the protruding portion PLN-T with different slope angles can be formed, thereby achieving luminescent material layers 40 with different slope angles.

[0054] In the display substrate provided in the above embodiment, by setting the protruding portion PLN-T of the planarization layer PLN to be located in the pixel opening area 20, the anode pattern 30 and the light-emitting material layer 40 located in the pixel opening area 20 can both continue the shape of the protruding portion PLN-T, so that the anode pattern 30 and the light-emitting material layer 40 located in the pixel opening area 20 both have a slope angle greater than 0°. In this way, the light emission of sub-pixels in the display substrate is different in various directions, which can realize that the light emission of the display substrate at the target viewing angle is greater than the light emission of the display substrate at the non-target viewing angle, thereby realizing the privacy function of the display substrate.

[0055] In some embodiments, the area S1 occupied by the protruding portion PLN-T in the pixel opening region 20 satisfies: S / 6≤S1≤S / 2, where S represents the area of ​​the pixel opening region 20; and / or, the slope angle α of the protruding portion PLN-T satisfies: 30°≤α≤60°.

[0056] For example, the area S1 occupied by the protruding portion PLN-T in the pixel opening region 20 can take values ​​of: S / 6, S / 5, S / 4, S / 3, S / 2, but is not limited to these.

[0057] For example, the slope angle α of the protruding portion PLN-T can take values ​​of 30°, 35°, 40°, 45°, 50°, 55°, and 60°, but is not limited to these.

[0058] For example, the slope angle of the luminescent material layer 40 can be 30°, 35°, 40°, 45°, 50°, 55°, or 60°, but is not limited to these values.

[0059] In the display substrate provided in the above embodiment, the area S1 occupied by the protruding portion PLN-T in the pixel opening area 20 and the slope angle α of the protruding portion PLN-T are set within the above range, so that the light emission amount of the sub-pixels in the display substrate is different in each direction. This enables the light emission amount of the display substrate at the target viewing angle to be greater than the light emission amount of the display substrate at the non-target viewing angle, thereby realizing the privacy function of the display substrate.

[0060] like Figure 2 and Figure 3 As shown, in some embodiments, the flat portion PLN-P includes a first sub-portion PLN-P1 and a second sub-portion PLN-P2. The first sub-portion PLN-P1 is located in a non-pixel opening area, and the second sub-portion PLN-P2 is located in the pixel opening area 20. Within the same pixel opening area 20, the second sub-portion PLN-P2 and the protruding portion PLN-T are arranged along a first direction.

[0061] For example, the first sub-part PLN-P1 and the second sub-part PLN-P2 are formed as an integral structure. The first sub-part PLN-P1 is located in the non-pixel opening region and is situated between the pixel defining layer PDL and the substrate 10. The second sub-part PLN-P2 is located in the pixel opening region 20 and is situated between the anode pattern 30 and the substrate 10. The anode pattern 30 and the light-emitting material layer 40 can continue the morphology of the second sub-part PLN-P2.

[0062] For example, the second sub-part PLN-P2 and the protruding part PLN-T are arranged along a first direction. For example, the sum of the area occupied by the second sub-part PLN-P2 in the pixel opening region 20 and the area occupied by the protruding part PLN-T in the pixel opening region 20 is equal to the area of ​​the pixel opening region 20.

[0063] For example, the area occupied by the protruding portion PLN-T in the pixel opening region 20 is greater than the area occupied by the second sub-part PLN-P2 in the pixel opening region 20; or, the area occupied by the protruding portion PLN-T in the pixel opening region 20 is less than the area occupied by the second sub-part PLN-P2 in the pixel opening region 20; or, the area occupied by the protruding portion PLN-T in the pixel opening region 20 is equal to the area occupied by the second sub-part PLN-P2 in the pixel opening region 20.

[0064] The above-mentioned arrangement of the second sub-part PLN-P2 and the protruding part PLN-T along the first direction enables the user to see the image displayed on the display substrate from both a normal viewing angle and a viewing angle biased towards the side where the second sub-part PLN-P2 is located. However, the user cannot see the image displayed on the display substrate from a viewing angle biased towards the side where the protruding part PLN-T is located, thereby achieving the privacy protection function of the display substrate.

[0065] like Figure 4 and Figure 5 As shown, in some embodiments, the flat portion PLN-P includes a first sub-portion PLN-P1 and two third sub-portions PLN-P3. The first sub-portion PLN-P1 is located in a non-pixel opening area, and the third sub-portions PLN-P3 are located in the pixel opening area 20. Within the same pixel opening area 20, the protruding portion PLN-T is located between the two third sub-portions PLN-P3.

[0066] For example, the first sub-part PLN-P1 and the two third sub-parts PLN-P3 are formed as an integral structure. The first sub-part PLN-P1 is located in the non-pixel opening region and is located between the pixel defining layer PDL and the substrate 10. The third sub-part PLN-P3 is located in the pixel opening region 20 and is located between the anode pattern 30 and the substrate 10. The anode pattern 30 and the light-emitting material layer 40 can continue the morphology of the third sub-part PLN-P3.

[0067] For example, within the same pixel opening region 20, the protruding portion PLN-T is located between the two third sub-parts PLN-P3. For example, the sum of the area occupied by the two third sub-parts PLN-P3 in the pixel opening region 20 and the area occupied by the protruding portion PLN-T in the pixel opening region 20 is equal to the area of ​​the pixel opening region 20.

[0068] For example, the area occupied by the protruding portion PLN-T in the pixel opening region 20 is greater than the area occupied by the two third sub-parts PLN-P3 in the pixel opening region 20; or, the area occupied by the protruding portion PLN-T in the pixel opening region 20 is less than the area occupied by the two third sub-parts PLN-P3 in the pixel opening region 20; or, the area occupied by the protruding portion PLN-T in the pixel opening region 20 is equal to the area occupied by the two third sub-parts PLN-P3 in the pixel opening region 20.

[0069] The above-mentioned arrangement is within the same pixel opening area 20, with the protruding portion PLN-T located between the two third sub-parts PLN-P3. This allows the user to see the image displayed on the display substrate from a viewing angle biased towards the side where the third sub-part PLN-P3 is located, while the user cannot see the image displayed on the display substrate from a normal viewing angle, thereby achieving the privacy function of the display substrate.

[0070] In some embodiments, the flat portion PLN-P includes a first sub-portion PLN-P1 and a fourth sub-portion, the first sub-portion PLN-P1 being located in a non-pixel opening region, and the fourth sub-portion being located in the pixel opening region 20. Within the same pixel opening region 20, the fourth sub-portion surrounds the protruding portion PLN-T.

[0071] For example, within the same pixel opening region 20, the fourth sub-part surrounds the protruding portion PLN-T. For example, the sum of the area occupied by the fourth sub-part in the pixel opening region 20 and the area occupied by the protruding portion PLN-T in the pixel opening region 20 is equal to the area of ​​the pixel opening region 20.

[0072] For example, the area occupied by the protruding portion PLN-T in the pixel opening region 20 is greater than the area occupied by the fourth sub-part in the pixel opening region 20; or, the area occupied by the protruding portion PLN-T in the pixel opening region 20 is less than the area occupied by the fourth sub-part in the pixel opening region 20; or, the area occupied by the protruding portion PLN-T in the pixel opening region 20 is equal to the area occupied by the fourth sub-part in the pixel opening region 20.

[0073] The above-mentioned arrangement is within the same pixel opening area 20, with the fourth sub-part surrounding the protruding part PLN-T, so that the user can see the image displayed on the display substrate from a viewing angle biased towards the side where the fourth sub-part is located, but cannot see the image displayed on the display substrate from a normal viewing angle, thereby realizing the privacy function of the display substrate.

[0074] like Figure 6 As shown, in some embodiments, the pixel defining layer PDL includes a plurality of barrier patterns PDL-D, which surround the plurality of pixel opening regions 20. Among the barrier patterns PDL-D that surround the same pixel opening region 20, at least two barrier patterns PDL-D have different thicknesses in the direction perpendicular to the substrate 10.

[0075] For example, the barrier graphics PDL-Ds that enclose the same pixel opening area 20 are formed into a single structure, but are not limited to this.

[0076] For example, in at least a portion of the plurality of pixel opening regions 20, the thickness of the retaining wall pattern PDL-D on the first side of each retaining wall pattern PDL-D that surrounds the pixel opening region 20 is greater than the thickness of the retaining wall pattern PDL-D on the other sides.

[0077] For example, in the same pixel opening region 20, the thickness of the barrier pattern PDL-D on both sides of the pixel opening region 30 opposite to each other along the first direction is greater than the thickness of the barrier pattern PDL-D on both sides of the pixel opening region 30 opposite to each other along the second direction, and the first direction intersects the second direction.

[0078] In the display substrate provided in the above embodiments, by setting at least two barrier patterns PDL-D with different thicknesses in the direction perpendicular to the substrate 10, the thicker barrier pattern PDL-D can block light emitted from the direction of non-target viewing angle, thereby enabling the user to view the display substrate normally from the target viewing angle, and not to view the display substrate from the non-target viewing angle, thus realizing the privacy function.

[0079] like Figure 7 As shown, in some embodiments, the pixel delimiting layer PDL includes a plurality of barrier patterns PDL-D, which enclose the plurality of pixel opening regions 20;

[0080] The display substrate further includes a spacer PS layer, which is located between the pixel defining layer PDL and the light-emitting material layer 40. The spacer PS layer includes a plurality of spacers PS. In each barrier pattern PDL-D that forms the same pixel opening area 20, at least one barrier pattern PDL-D is provided with the spacer PS on the side facing away from the substrate 10.

[0081] For example, the spacer PS is formed as an integral structure with the retaining wall pattern PDL-D, but it is not limited to this.

[0082] For example, in at least a portion of the plurality of pixel opening regions 20, in each of the barrier patterns PDL-Ds surrounding the pixel opening region 20, a spacer PS is provided on the side of the barrier pattern PDL-D located on the first side facing away from the substrate.

[0083] For example, in the same pixel opening region 20, a spacer PS is provided on the side of the barrier pattern PDL-D located on both sides of the pixel opening region 30 opposite to each other along the first direction, facing away from the substrate.

[0084] In the display substrate provided in the above embodiment, by setting each barrier pattern PDL-D that surrounds the same pixel opening area 20, at least one barrier pattern PDL-D is provided with the spacer PS on the side facing away from the substrate 10. The spacer PS can block the light emitted from the direction of non-target viewing angle, thereby enabling the user to view the display of the display substrate normally under the target viewing angle, and not to view the display of the display substrate under non-target viewing angle, thus realizing the privacy function.

[0085] like Figure 8 As shown, in some embodiments, the display substrate further includes:

[0086] A light-shielding layer is located on the side of the light-emitting material layer 40 facing away from the substrate 10. The light-shielding layer includes a plurality of light-shielding patterns 50, at least a portion of which is located in the pixel opening region 20.

[0087] For example, the light-shielding layer includes a black matrix layer, and the display substrate further includes an encapsulation layer 60, the light-shielding layer being located on the side of the encapsulation layer 60 facing away from the substrate 10.

[0088] For example, the light-blocking pattern 50 blocks the edge region of the pixel opening area 20.

[0089] For example, the area of ​​the pixel opening region 20 that is obscured surrounds the area of ​​the pixel opening region 20 that is not obscured.

[0090] For example, the area of ​​the pixel opening region 20 that is obscured is located on one side of the area of ​​the pixel opening region 20 that is not obscured.

[0091] In the display substrate provided in the above embodiments, by setting at least a portion of the light-shielding pattern 50 to be located in the pixel opening area 20, the user cannot see the image displayed on the display substrate from a viewing angle biased towards the side where the light-shielding layer is located, while the user can see the image displayed on the display substrate from a normal viewing angle, thereby realizing the privacy function of the display substrate.

[0092] This invention also provides a display device, including the display substrate provided in the above embodiments.

[0093] It should be noted that the display device can be any product or component with display function, such as a television, monitor, digital photo frame, mobile phone, or tablet computer. The display device also includes flexible circuit boards, printed circuit boards, and backplanes.

[0094] In the display substrate provided in the above embodiments, by setting the light emission of the display substrate at the target viewing angle to be greater than the light emission of the display substrate at the non-target viewing angle, when the display substrate is applied to a display device, the user can obtain a better display effect when viewing the display screen of the display device at the target viewing angle, while the display effect is significantly reduced when the user views the display screen of the display device at the non-target viewing angle. This not only achieves the privacy protection function of the display device and effectively protects the user's privacy, but also reduces the impact of light on others. Therefore, the display substrate provided in the above embodiments has a privacy protection function when applied to a display device, which well meets the personalized needs of users.

[0095] Therefore, the display device provided in the embodiments of the present invention also has the above-mentioned beneficial effects when including the above-described display substrate, which will not be repeated here.

[0096] It should be noted that the signal line extending along the X direction means that the signal line includes a main part and a secondary part connected to the main part. The main part is a line, line segment, or strip-shaped body. The main part extends along the X direction, and the length of the main part extending along the X direction is greater than the length of the secondary part extending in other directions.

[0097] It should be noted that, in the embodiments of the present invention, "same layer" can refer to film layers located on the same structural layer. Alternatively, for example, film layers located on the same layer can be layer structures formed by using the same film deposition process to form a specific pattern, and then patterning the film layer using the same photomask through a single patterning process. Depending on the specific pattern, the single patterning process may include multiple exposure, development, or etching processes, and the specific pattern in the formed layer structure can be continuous or discontinuous. These specific patterns may also be at different heights or have different thicknesses.

[0098] In the various method embodiments of the present invention, the sequence numbers of each step are not intended to limit the order of the steps. For those skilled in the art, any changes in the order of the steps without creative effort are also within the scope of protection of the present invention.

[0099] It should be noted that the various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the method embodiments are basically similar to the product embodiments, so the description is relatively simple, and the relevant parts can be referred to the description of the product embodiments.

[0100] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connection,” “coupled,” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0101] It is understandable that when a component such as a layer, film, region, or substrate is referred to as being "above" or "below" another component, the component may be "directly" located "above" or "below" the other component, or there may be intermediate components present.

[0102] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0103] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A display substrate, characterized in that, include: A substrate, and a pixel defining layer and a plurality of sub-pixels disposed on the substrate; The pixel defining layer defines multiple pixel opening regions; The sub-pixel includes an anode pattern and a light-emitting material layer. The anode pattern is located between the substrate and the light-emitting material layer. At least a portion of the pixel defining layer is located between the anode pattern and the light-emitting material layer. At least a portion of the anode pattern is located in the pixel opening region, and at least a portion of the light-emitting material layer is located in the pixel opening region. The light emission of the display substrate at the target viewing angle is greater than the light emission of the display substrate at the non-target viewing angle; The pixel defining layer includes multiple barrier patterns, which surround the multiple pixel opening areas. Among the barrier patterns surrounding the same pixel opening area, at least two barrier patterns have different thicknesses in the direction perpendicular to the substrate. At least a portion of the light-emitting material layer is located on the surface of the barrier pattern facing away from the substrate. The display substrate further includes a spacer layer, which is located between the pixel defining layer and the light-emitting material layer. The spacer layer includes a plurality of spacers, and in each barrier pattern that forms the same pixel opening area, at least one barrier pattern has the spacer disposed on the side of the barrier pattern facing away from the substrate. In each barrier pattern that forms the same pixel opening area, the spacer is located on the thicker barrier pattern, and the spacer blocks light rays emitted in the direction of non-target view. The display substrate further includes: a planarization layer, which is located between the substrate and the anode pattern. The planarization layer includes a flat portion and a protruding portion. The protruding portion is located in the pixel opening area. The slope angle of the protruding portion is greater than 0°, and the slope of the protruding portion faces the thinner barrier pattern. The flat portion includes a first sub-portion and a second sub-portion. The first sub-portion is located in the non-pixel opening area, and the second sub-portion is located in the pixel opening area. Within the same pixel opening area, the second sub-portion and the protruding portion are arranged along a first direction. The protruding portion is close to the thicker retaining wall pattern. In the pixel opening area, the anode pattern continues the morphology of the flat layer.

2. The display substrate according to claim 1, characterized in that, The morphology of the light-emitting material layer in the pixel opening region continues that of the planar layer.

3. The display substrate according to claim 2, characterized in that, The area S1 occupied by the protruding part in the pixel opening area satisfies: S / 6≤S1≤S / 2, where S represents the area of ​​the pixel opening area; and / or, the slope angle α of the protruding part satisfies: 30°≤a≤60°.

4. The display substrate according to any one of claims 1 to 3, characterized in that, The display substrate further includes: A light-shielding layer is located on the side of the light-emitting material layer facing away from the substrate. The light-shielding layer includes a plurality of light-shielding patterns, at least a portion of which is located in the pixel opening region.

5. A display device, characterized in that, Includes the display substrate as described in any one of claims 1 to 4.

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